KR101624090B1 - 각막을 특성화하고 안과용 렌즈를 획득하기 위한 시스템 - Google Patents
각막을 특성화하고 안과용 렌즈를 획득하기 위한 시스템 Download PDFInfo
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Abstract
Description
도 1은 의사팩킥(pseudophakic) 눈에서 사용되는 본원 발명의 방법을 도시한 도면이다.
도 2는 라식-후(post-LASIK)의 눈에서의, 그리고 인간 눈의 수정체의 구면 수차의 존재를 나타내는 도면이다.
도 3은 망막 이미지의 선명도를 결정하기 위한 계산 루트(route)를 도시한 도면이다.
도 4는 시야의 선명도를 결정하기 위한 컴퓨팅 방법에서 채용될 수 있는 회선(convolution)의 수학적 과정을 가시적으로 도시한 도면이다.
도 5는 유한 요소 모델링(finite element modeling; FEM)의 결과로서 로딩된 각막 내의 응력 변형(stress strain) 분포를 도시한 단면도이다.
도 6은 이차 하모닉 제너레이션 이미징(second harmonic generation imaging ;SHGi) 및 2 광자 여기 형광 이미지(two photon excited fluorescence imaging ;TPEFi)의 물리적 프로세스를 도시한 도면이다.
도 7은 본원 발명에서 채용될 수 있는 2-광자 현미경/검안경(ophthalmoscope)의 주요 성분들을 도시한 도면이다.
도 8은 콜라겐 조직 구조의 SHG-이미징을 도시한 도면이다.
도 9는 각막의 미세형태계측(micromorphometry)을 스케치한 도면이다.
도 10은 맞춤형 안구내 렌즈(customized intraocular lens; C-IPSM)의 크기와 유사한 시계(field of view)에 걸친 복합 각막 맵을 생성하기 위한 구성체를 도시한 도면이다.
도 11은 이식된 안구내 렌즈로 얻어지는 이미지의 선명도를 탐지하기 위한 시스템을 도시한 도면이다.
Claims (18)
- 환자의 시야 선명도를 결정하고 교정 렌즈를 위한 데이터를 유도하는 방법으로서,
a)비선형 광학 프로세스에 의해 망막의 색소 상피 세포(pigment epithelial cells) 내의 단백질로부터 형광성 빛을 생성하는 파장의 스캐닝 적외선 광을 이용하여 망막 이미지를 형성하는 단계로서, 상기 스캐닝 적외선 광은 방출된 형광성 빛으로부터 망막 이미지를 형성하도록 망막 상에 포커싱되는 복수 개의 비임을 포함하는 것인 형성 단계;
b)상기 망막 이미지의 선명도를 탐지하는 탐지 단계;
c)상기 스캐닝 적외선 광의 비임 중 적어도 일부의 경로 길이를 조절하여 망막 이미지의 선명도를 조절하는 단계로서, 그러한 경로 길이 조절은 망막 상에 광을 포커싱할 때에 교정 렌즈의 효과를 분석하기 위하여 광학 교정의 효과를 시뮬레이팅하는 것인 조절 단계; 및
d)상기 경로 길이 조절을 기초로 하여 교정 렌즈를 위한 데이터를 유도하는 단계
를 포함하는 방법. - 제1항에 있어서, 상기 스캐닝 적외선 광의 파장은 750 내지 800 nm인 것인 방법.
- 제2항에 있어서, 상기 스캐닝 적외선 광은 780 nm의 파장을 갖는 것인 방법.
- 삭제
- 삭제
- 제1항에 있어서, 상기 조절 단계는 페이즈 플레이트 보상장치(phase plate compensator)를 이용하여 경로 길이를 조절하는 것을 포함하는 것인 방법.
- 제1항에 있어서, 상기 조절 단계는 능동 거울을 이용하여 경로 길이를 조절하는 것을 포함하는 것인 방법.
- 제1항에 있어서, 상기 탐지 단계는 망막 이미지를 형성하는 방출된 형광성 빛의 세기를 탐지하는 것을 포함하고, 상기 조절 단계는 망막 이미지를 형성하는 방출된 형광성 빛의 세기를 증가시키도록 스캐닝 적외선 광의 비임 중 적어도 일부의 경로 길이를 조절하는 것을 포함하는 것인 방법.
- 제1항에 있어서, 상기 스캐닝 적외선 광은 50 내지 100 펨토초(femtosecond)의 기간과 적어도 0.2 nJ의 에너지 레벨을 갖는 펄스로 조사되는 것인 방법.
- 제9항에 있어서, 상기 스캐닝 적외선 광은 50 MHz에서 발생되는 펄스로 방출되는 것인 방법.
- 제1항에 있어서, 상기 스캐닝 적외선 광은 일련의 펨토초 레이저 펄스를 포함하는 것인 방법.
- 제1항에 있어서, 상기 방출된 형광성 빛은 530 nm 내지 550 nm의 파장을 갖는 것인 방법.
- 제1항에 있어서, 상기 비선형 광학 프로세스는 2 광자 여기 형광 이미지(two photon excited fluorescence imaging; TPEFi) 프로세스를 포함하는 것인 방법.
- 제1항에 있어서, 상기 교정 렌즈는 IOL, 각막 렌즈, 또는 콘택트 렌즈인 것인 방법.
- 제1항에 있어서, 상기 교정 렌즈는 신체내(in situ) 렌즈인 것인 방법.
- 제15항에 있어서, 상기 신체내 렌즈는 각막 렌즈, IOL 또는 자연 수정체 렌즈인 것인 방법.
- 제1항에 있어서, 상기 조절 단계는 스캐닝 적외선 광의 비임의 적어도 일부를 미리 보정함으로써 굴절 교정의 효과를 시뮬레이팅하도록 어댑티브-옵틱스 모듈(adaptive-optics module)을 이용하는 것을 더 포함하는 것인 방법.
- 제17항에 있어서, 상기 조절 단계는 상기 어댑티브-옵틱스 모듈의 능동 거울에 의해 스캐닝 적외선 광의 경로 길이를 조절하는 것을 포함하는 것인 방법.
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